sorry, can't say this has ever happened to me. Being she is 9, I assume you've verified it truly is clear liquid, and not brown(diarrhea), and that it truly is coming from the butt?
Blogging my experience With UC. http://lifewithcolitis.blogspot.com/
12-14-2010 - Following strict TCM(Traditional Chinese Medicine) diet and teas.
2000 - Ulcerative Colitis - Proctitis
-> Lialda 4x/day (Rowasa/Canasa when flare)